Process of producing acetylene tetrachlorid.



.more fully described.

'lyzing agent.

UNITED. STATES PATENT OFFICE.

GEORG ORNSTEIN, OF BERLIN, GERMANY.

PROCESS OF'PRODUCINZG ACETYLENE TE'IRACHLORID.

No Drawing.

To all whom it may concern.-

Be it known that I, Gnono ORNSTEIN,

Ph. D., chemist, subject of the German Emperor, and resident of Berlin, Kingdom of Prussia, German Empire, have invented new and useful Improvements in Processes for Producing Acetylene Tetrachlorid, of which the following is a full, clear, and exact specification.

My invention relates to an improved process for producing acetylene tetrachlorid.

The known processes for the production of acetylene tetrachlorid may be divided into two main classes, that is to say,such in which chlorids of antimony areused, and such in which iron is employed as the cata- The rocesses of the first class possess this disadvantage that the acetylene tetrachlorid produced can be obtained in a pure state only by repeated fractional distillation, and this 1s rendered still more complicated by the separation of the chlorin from the entachlorid of antimony during the heatlng. This disadvantage may be met by using iron as the catalyzing agent. Thus, according to a certain process already proposed the end product is obtained in a pure state bya single washing and distillation, but this process, the same as the others of that class, possesses this disadvantage, that it is necessary to. mix the gases with some other diluting agent first before they can besubjected to the action of the iron. Moreover, it is'necessary in most of the processes abovereferred to, to employ exactly measured quantities of the gases, as otherwise any surplus of the one gas may very easily cause an explosion.

The object of my invention is to avoid these objections, and my invention therefore consists in the improved process hereinafter According to this invention I cause acetylene to act on chlorin dissolved in acetylene tetrachlorid and in the presence of/such means as are capable of the processes heretofore known, may be enumerated as f lows .1. The end product is obtained in a plum state with only one washing operation and distillation. 2. Apart- Specification of Letters Patent.-

from the reacting gases, thecatalyzing agent and the end product, no other body is present during the reaction, for instance as dililting agent. 3. It is altogether immaterial, so far as the safety of the process is conqarned, whether the gases are introduced in exactly measured quantities or whether there is a surplus quantity of any of them. 4. The process may be carried out in a continuous manner, which is of great practical importance. Moreover, it has been found that in the improved process here referred to a material increase in the catalytic effect is obtained and that the acetylene tetrachlorid apparently acts at the same time as a chlorin carrier.

One example of carryingout my improved process is as follows :Chlorin and acetylene are admitted into acetylene tetrachlorid at different points of areceptacle containing iron chips. Since acetylene tetrachlorid is a good solvent for chlorin and a bad solventfor acetylene, it is necessary to apply the inlet pipe for the acetylene below the level of the inlet at which the chlorin is admitted, so that the acct lene which rises will always meet acetyi ene tetrachlorid saturated with chlorin, to be then immediately combined with this chlorin, under the action of the iron present, into acetylene tetrachlorid. In this manner two temporarily distinct actions will take place, that Patented Jul 2, 1912. Application filed September 12, 1910. Serial No. 581,618.

is to say, firstly, the dissolving of the chlorin in acetylene tetrachlorid, and secondly, the action of the acetylene on the finished solution in the presence of iron. The heat generated by the reactionis removed by cooling. The acetylene'tetrachlorid generated is pischairged by way of an overflow pipe,

11 the practical operation Y the process above described may, of course, be modified in regard to details and thereby adapted to various technical requirements and conditions.

What I claim as my invent-ion and desire to secure by Letters Patent is 1. The hereinbefore described process of manufacturing acetylene tetrachlorid .by in troducing acetylene and chlorin into an initially present quantity of acetylene tetrachlorid in the presence of means capable of accelerating chemical reactions, the acetylene being introduced below the level at which the chlorin is admitted.

9 The hereinbefore described process of .a non-volatile catalyzing agent,

3. The hereinbefore described process of manufacturing acetylene tetra'chloridby introducing acetylene and chlorin into an initially present quantity of acetylene tetra chlorid in the presence of a non-volatile catalyzing agent.

4. The hereinbefore described process of manufacturing acetylene tetrachlorid by introducing acetylene and chlorin into an initially present quantity of acetylene tetrachlorid in the presence of a non-volatile catalyzing agent, the acetylene being introduced below the level at which the chlorin is admitted.

,5. The hereinbefore described process of manufacturing acetylene tetrachlorid by allowing acetylene to act on chlorin dissolved in acetylene tetrachlorid in the presence of lron.

6. The hereinbefore described process of manufacturing acetylene tetrachlorid by introducing acetylene and chlorin into an initially present quantity of acetylene tetrachlorid in the presence of iron.

c 7. The hereinbefore described process of manufacturing acetylene tetrachlorid by introducing acetylene and chlorin into an ini: tially present quantity of acetylene tetrachlorid in the presence of iron, the acetylene being introduced below the level at which the chlorin is admitted.

'In testimony, that I claim the foregoing 

